Gas Detection for Lease Automatic Custody Transfer Systems
Lease Automatic Custody Transfer (LACT) skids allow dynamic custody transfer of saleable liquid hydrocarbons by determining quantity and quality of the hydrocarbons and re-circulating the liquid hydrocarbons which need further treatment. LACT skids ensure accurate hydrocarbon measurement between producers and their customers.
Custody transfer skids are prefabricated, skid-mounted assemblies used at both attended and unattended leases and loading & unloading points for determination of quantity and quality of liquid hydrocarbons. These skids range in size from small units movable by forklift to large semi-enclosed “buildings” around the pump and measurement components. LACT skids are found on land and offshore transferring into pipelines, barges, and tankers, for both loading and off-loading operations.
LACT units are intended to be automated solutions. They must fail-safe to shut down or diversion mode when a problem is detected. The skid must also be low maintenance and impose no additional hazards to the transfer process.
Gas Detection Solutions for LACT Systems
LACT skids are susceptible to leaking combustibles and H2S which must be monitored to ensure human and environmental safety. If the LACT unit is in an enclosed shelter, Oxygen monitoring may be required as well.
Sensidyne has partnered with skid manufacturers and panel builders to provide cost-effective, low-maintenance gas detection solutions which, monitor for combustible and toxic gases and Oxygen depletion. Sensidyne systems are easy to use and can provide local annunciation or output a 4-20 mA signal to a skid mounted panel PLC.
The SensAir CMB is approved for use in Class I Division 1 Groups A, B, C, & D hazardous classified areas. It has a non-intrusive user interface for span and zero adjustments. SensAir CMB is housed in a rugged explosion-proof enclosure with variable mounting orientation options. The poison resistant sensor with 316 stainless steel sensor housing will survive extreme conditions. A three-wire, 4-20mA output enables easy installation in retrofit or new applications with interface to common facility communication links. The instrument has an LED display and non-intrusive user interface for easy
maintenance and setup.